Hammer drill



FIG. 1 is a perspective view of a hammer drill showing our new design;

FIG. 2 is a right side elevational view showing the design for the hammer drill of FIG. 1;

FIG. 3 is a front elevational view showing the design for the hammer drill of FIG. 1;

FIG. 4 is a rear elevational view showing the design for the hammer drill of FIG. 1;

FIG. 5 is a top plan view showing the design for the hammer drill of FIG. 1; and,

FIG. 6 is a bottom plan view showing the design for the hammer drill of FIG. 1.

The broken lines shown in the drawings illustrate features of the hammer drill that form no part of the claimed design. 

CLAIM The ornamental design for a hammer drill, as shown and described. 